>>-saturday, we are in savannah at 4, georgia for live coverage of the book festival starting at 10:15 east turn on the future. a former navy psychologists on lessons i learned that combat hospital. the chief washington correspondent on the war in afghanistan from the outpost. a presidential historian, and of 4:00, and gary wills asks, why priests? live saturday on c-span to. >> he thought she was the smartest person he ever knew and he knew how much she loved him. he knew that she would tell him the truth. she wasn't going to sugar coat. one of the tapes that i love that came out is the one where she is analyzing his speech. she was really tough on him. mother always was startled. i think you should do that. it would tell me all the time, your mother has the best judgment of anybody. always listen to your mother. he was just devoted to her. >> ladybird johnson on the anniversary, part of a president of the day weekend. american history tv. >> of the chief of staff who says the greatest threat facing our nation is fiscal uncertainty and potential budget shortfalls. he cited the upcomin